A volunteer military or all-volunteer military is one which derives its manpower from volunteers or as a voluntary occupation, rather than conscription or mandatory service. A country may offer attractive pay and benefits through military recruitment to attract potential recruits. Many countries with volunteer militaries reserve the right to renew conscription in the event of an emergency.

The Indian Army is the world's largest standing volunteer army. According to the International Institute for Strategic Studies, in 2010 the army had a strength of 1,129,900 active personnel and 960,000 reserve personnel

In recent decades, the trend among numerous countries has been to move from conscription to all-volunteer military forces. One significant example is in France, which has historically been the first to introduce modern conscription and whose model was followed by many other countries in Europe and elsewhere around the world.